Truck.



G. F. STARBUCK.

TRUCK.

APPLICATION FILED 511F125, 1913.

1,094,822, Patented Apr, 28, 1914.

I 2 J'. Zf/roess e 3.

UNITED STATES PATENT OFFICE.

GEORGE F. STARBUCK, OF WALTHAM, MASSACHUSETTS.

TRUCK.

2 '0 allaohom it may concern: 7

Be it known'that I, GEORGE F. STARBUCK,

a citizen of the United States, residing at Faltham, in the county of Middlesex and State of- Massachusetts, have invented new and useful Improvements in Trucks, of which the following is a specification. i i

This invention relates 'to certain im: provements in trucks particularly, though not exclusively, to the four wheel trucks.

The object of the present invention is to provide'a Zquiet running, easy riding truck having 4 comparatively few parts, consequently substantially reducing the cost of manufacturing thesame. The truck frame of the device is pivotally mounted upon the journal boxes thereof and adapted to be moved vertically relatively to the car axles substantially without chai'iging the relation of the axles of the truck relatively to eachother, and as a result of this construction and of the arrangement of the various parts relatively to each other the wear of said several parts will be greatly reduced and the life of the truck substantially prolonged,

The object of the invention is further to provide means adapted'to permit a limited lateral displacement of the truck bolster relative to its truck and to return said bolster to its state of equilibrium.

The invention consists in the combination and arrangement of Ipart s whereby the above objects and certain other objects hereinafter appearing may" be attained, as set forth in the following specification and particularly pointed out in the claims.

Referring to the drawings: Figure l is a partial plan view of, a truck embodying my invention, portions of said truck being removed to save space in..the drawings. Fig. 2 is a side elevation of the truck illustrated in Fig. 1. Fig. 3 is a transverse sec-- tional elevation of the truck taken on a line extending substantially longitudinally of the median axial line of the bolster thereof.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 5 and 6 are the' side frames of a truck; 7 the axles having wheels 8 permanently secured thereto.

9, 9 are journal boxes pivotally mounted upon the axles 7 outside of the Wheels 8 and in a manner well known to those skilled in the art, therefore needing no further description. Connected with the journal boxes 9 and preferably integral therewith are Specification of Letters Patent." 'Applicati'on filed September as, 1913." Serial 110,791,852. 7

arms -10 extending to and nected with the side frame located adjacent thereto bymeans of bolts 11. The side. frames 5 and 6. are each provided with a transversecasing 12 which is arranged substantially parallel withaand between' the axles 7, Formed upon each side of said casing are .two sets of ears 13 and 14, the

ears 13. be1ng arranged adjacent the outer;

end of saidcasing and the ears 14 adjacentthe inner end of said casing, there being quite a substantial distance between the sets of ears located upon the same side of said casing. .The arms 10 are-forked at 15, the members 16 and 17 of said forked portion which constitute the innerends of said arms pivotally engaging the two sets of ears 13 and 14 respectively for'the'purpose of providing a substantialsupport for said side frames i'andfto prevent a lateral relative- Patented Apr.28, 1914..

pivotally coni movement between the journal boxes to WhlCll the arms 10 are secured and the side frame connected. thereto. side frames 5 and 6 are provided, upon opposite sides which extend outwardly toward the' journal boxes 9 over the armsltlgwhile upon said arms .10 in juxta-relation tosaid'im verted spring seats 18am spring-seats- 19.

Coil springs 20 are interposed between said 7 spring seats 18 and 19- and yieldingly support said frames '5 and 6 relatively to'the axles 7.

It will be noted that the axes of the-bolts 11 are arranged substantially parallel 'to each other and also substantially parallel with the axes of the axels 7. Furthermore 1 all of said axes normally liesubstantially in the same horizontal-plane as-a result of v which themovements of themes of the bolts 11, due to the compression of the springs' 20, will be substantially' in a vertical plane, consequently the relation of the axles 7, 7 to each other will remainsubstantially unchanged, tween said axles;-whereby easily.

The side frames 5 and 6 are connected orthe truck will ride particularly as to the distancebe' tied together by means preferably consist ing of a channel 21 which is riveted to the bottom walls of the casings 12 of said side frames. A truck holster 22 is mounted transvelse'ly of said side frames 5 and 6 and extends into the casings 12 which constitute lateral guides for the ends of said bolster.

The bolster' 22 is provided with the usual truekcenter plate 23 and truck side bear- 80 I of said casing, with inverted spring seats 18 a 1 ings 24 upon which the body of the 28 thereo {thusiponstituting pivots for said springs permitting th'e same to be rocked.

laterally of said truck. The sides 29 constituting the .walls of the recess 27 engage the sides'of the plates 26 and-position said springs preventing the displacementthereof when said springs are rocked. upon the pivots 28, Plates 30 are also secured to the springsagainst the upper ortions there of and these plates are provi ed preferably with; curved-supper faces- 3}; which are "ar-;:

ranged .to rock against-fiatsurfaces 32 upon the under sideof the bolster 22, said plates 26 andconstituting rocker lates which permit a lateral movement'of t e b0l'ster22 relatively-to the side framesfiand 6.

To position the bolster relativel to the rocker, plates=30 I have provide 5 means,

which preferably include a spur =33 projectin'g laterallyifrom the-'fa ce-*31'-of each of said plates and into en 'agement with a complementary recess 34. ormedinfthebolster" 22, saidspureandireoesspe initting. a=sl-ight 'gveigieacme tliIi--plate, v 30 provisionforilateralimovement o'f'the bolste'r 22 relatively to said side franies 5 and 6 is essential in .relievin the strain upo'n the side frames ;and- [whee flanges when the truck strikes a sharp ,turn iri'the'track, but after v said curve, has been assedithe truck bolster 22 mustautomatica y returnto its st'ateof equilibrium relatively to the .truck;

To'aceoinplish-the above result the curved faces 31 of thefrocker plates 30*are each preferably formed' on an arc the'radius of h c s .-:uli$$e a 1r r te n t d stance between-said curved faeeandthe pivotal i point '28 for thejspring carrying'said plates,

' my 'hand in' rese 'by said frames.

consequently when said springs are oscillated from one side to the other relatively to the verticalposition thereof the bolster tour of said plate'30 and as soon as the pressure, due to the inertia ofth'e body of the car 22 will be slightly lifted owing to the con in rounding a curve, has'beenoverco'me by the weight of the bodyfof said car,'- the t ereby return thebols'ter22 toits normal position. i

Having I claim and desire by Letters Patent toss cureis: f V 1. 'Ac'artruclg having, ofxside frames, means adapted to tie said frames together, a pair of axles, journal boxes mounted at opposite ends'of each. of said axles, arms connected with each of said journal boxes, said arms extendin to and pivots rings.25iwill beimmediatelymighted and I thus described ainy. invention what incombinatioma pair ally connected' with said si e frames, the axes of said pivotal connections and said axles lying substantially-paralleland nor-; mally substantially in the sam'e plane,-. and springs interposed between said armsand said side frames intermediate the pivots of said arms and their respective journal boxes, adapted to yieldiiigly support said side frames relatively to said axles.

2. A car truckhaving,-in combination, a I I pair ofside frames, means to tie said frames boxes, each of said arms being forked, means adapted to pivotallyf connect each of the lying substantially" parallel and normally substantially in the same plane, springs interpose'd between each of said'arms and said frames adapted to yieldingly support. said frames on said axles, 'and'a bolster carried In testimony whereof I have hereunto set GEGRQE FL-s'maBUon Witnes p I Similar Ei TA 'r,"

' Lsonaan A.Powsu..

witnesses.

together, a -pair of axles, vjournal boxes mounted upon opposite ends of each of said axles,armsconnected with each of said journal members.constituting'saidiforltsto said side frames, the axes of said pivotal connections nce'of two subscribing 

